A Market Research Team Compiled the Following Discrete Probability Distribution

question 18

Multiple Choice

A market research team compiled the following discrete probability distribution on the number of sodas the average adult drinks each day.In this distribution, x represents the number of sodas which an adult drinks. $$\begin{array} { | l | l | } \hline \boldsymbol { x } & \mathrm { P } ( \mathrm { x } ) \\\hline 0 & 0.30 \\\hline 1 & 0.10 \\\hline 2 & 0.50 \\\hline 3 & 0.10 \\\hline\end{array}$$ The standard deviation of x is _______________.

• A)1.04
• B)0.89
• C)1.40
• D)1.02
• E).588

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Definitions:

Demand Function

A mathematical expression showing the relationship between the quantity of a good demanded by consumers and its price.

Edited

Modified or changed, especially to correct or improve a text, film, or recording.

Typeset

The arrangement and composition of text material with a variety of fonts, sizes, and styles for printing or digital display.

Demand Function

A mathematical expression that shows the relationship between the quantity of a good that consumers are willing and able to purchase and its price, along with other determinants of demand.